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Oceans of stimuli: an individual-based model to assess the role of olfactory cues and local enhancement in seabirds' foraging behaviour.
Bastos, Rita; Martins, Beatriz; Cabral, João Alexandre; Ceia, Filipe R; Ramos, Jaime A; Paiva, Vítor H; Luís, António; Santos, Mário.
Afiliação
  • Bastos R; Laboratory of Applied Ecology, CITAB, Centre for the Research and Technology of Agro-Environment and Biological Sciences, University of Trás-os-Montes e Alto Douro, 5000-911, Vila Real, Portugal. rita.bastos@gmail.com.
  • Martins B; Department of Life Sciences, MARE, Marine and Environmental Sciences Centre, University of Coimbra, 3004-517, Coimbra, Portugal. rita.bastos@gmail.com.
  • Cabral JA; Laboratory of Applied Ecology, CITAB, Centre for the Research and Technology of Agro-Environment and Biological Sciences, University of Trás-os-Montes e Alto Douro, 5000-911, Vila Real, Portugal.
  • Ceia FR; Laboratory of Applied Ecology, CITAB, Centre for the Research and Technology of Agro-Environment and Biological Sciences, University of Trás-os-Montes e Alto Douro, 5000-911, Vila Real, Portugal.
  • Ramos JA; Department of Life Sciences, MARE, Marine and Environmental Sciences Centre, University of Coimbra, 3004-517, Coimbra, Portugal.
  • Paiva VH; Department of Life Sciences, MARE, Marine and Environmental Sciences Centre, University of Coimbra, 3004-517, Coimbra, Portugal.
  • Luís A; Department of Life Sciences, MARE, Marine and Environmental Sciences Centre, University of Coimbra, 3004-517, Coimbra, Portugal.
  • Santos M; Biology Department, University of Aveiro, 3810-193, Aveiro, Portugal.
Anim Cogn ; 23(4): 629-642, 2020 Jul.
Article em En | MEDLINE | ID: mdl-32152923
ABSTRACT
Oceans are extremely dynamic environments, which poses challenges for top-predators such as seabirds to find food resources. Yet, seabirds evolved sensorial abilities (olfactory senses) along with complex behaviours (social information transfer through local enhancement) to improve foraging efficiency. Using the Cory's shearwater (Calonectris borealis) as a model species, we developed an individual-based model to explore the complementary role of different searching mechanisms (olfactory foraging and local enhancement) for the optimal foraging behaviour of pelagic seabirds during 1-day foraging trips around breeding colonies. Model outputs were compared with observed patterns of Cory's shearwaters distribution during local foraging trips. Also, the foraging efficiency of virtual individuals was analysed considering hypothetical scenarios of foraging conditions and densities of foraging individuals around breeding colonies. The results support the use of a combination of searching strategies by Cory's shearwaters, which produced representative patterns of space use from tracked individuals, including spatial foraging segregation of neighbouring sub-colonies. Furthermore, while the mechanisms underpinning local enhancement played a key role in mitigating sub-optimal foraging conditions, the use of olfactory senses conferred great adaptive foraging advantages over a wide range of environmental conditions. Our results also indicate a synergistic effect between the two strategies, which suggests that a multimodal foraging strategy is useful to forage in extremely dynamic environments. The developed model provides a basis for further investigation regarding the role of foraging mechanisms in the population dynamics of colonial animals, including the adaptive foraging behaviour of marine top predators to dynamic environmental conditions.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Olfato / Sinais (Psicologia) Limite: Animals Idioma: En Revista: Anim Cogn Assunto da revista: MEDICINA VETERINARIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Portugal

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Olfato / Sinais (Psicologia) Limite: Animals Idioma: En Revista: Anim Cogn Assunto da revista: MEDICINA VETERINARIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Portugal